United States. Bureau of Entomology and Plant Quarantine. Division of Forest Insect Investigations

Identifiers

Open LibraryOL7289744A

Top Subjects

Forestry (1)
Forest mensuration (1)
Forest inventory (1)
Laboratory animals (1)
Thyridopteryx ephemeraeformis (1)
Leaves (1)
Diseases and pests (1)

Books by United States. Bureau of Entomology and Plant Quarantine. Division of Forest Insect Investigations

Total count: 5

A ponderosa pine tree classification for use in determining susceptibility to bark-beetle attack

1929-01-01
Brief history of the Division of Forest Insect Investigations and its accomplishments

1939-01-01
The bagworm

1949-01-01
Note on small red and green galls or swellings on upper surface of silver maple leaves

1951-01-01
Control of Dutch elm disease and elm phloem necrosis

U.S. Agricultural Research Administration.1952-01-01